<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>改变浏览器颜色</title>
</head>
<body>
<script>
    //随机改变浏览器页面颜色
    setInterval(fn,1000);
    function fn(){
        document.body.style.backgroundColor="rgb("+Math.round(Math.random()*255)+","+Math.round(Math.random()*255)+","+Math.round(Math.random()*255)+")";
    }

</script>
</body>
</html>